package com.ityc.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.ityc.mapper.EmpExprMapper;
import com.ityc.mapper.EmpMapper;
import com.ityc.pojo.*;
import com.ityc.service.EmpLogService;
import com.ityc.service.EmpService;
import com.ityc.utils.JwtUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.time.LocalDateTime;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Slf4j
@Service
public class EmpServiceImpl implements EmpService {

    @Autowired
    private EmpMapper empMapper;
    @Autowired
    private EmpExprMapper empExprMapper;
    @Autowired
    private EmpLogService empLogService;

/*    @Override
    public PageResult<Emp> page(Integer page, Integer pageSize) {
        Integer start = (page-1)*pageSize;
        List<Emp> rows = EmpMapper.list(start,pageSize);
        Long total = EmpMapper.count();
        return new PageResult<Emp>(total,rows);
    }*/

    /*@Override
    public PageResult<Emp> page(Integer page, Integer pageSize, String name, Integer gender, LocalDate begin, LocalDate end) {
        PageHelper.startPage(page,pageSize);
        List<Emp> empList = EmpMapper.list(name, gender, begin, end);
        Page<Emp> p = (Page<Emp>) empList;
        return new PageResult<Emp>(p.getTotal(),p.getResult());
    }*/
    @Override
    public PageResult<Emp> page(EmpQueryParam empQueryParam) {
        PageHelper.startPage(empQueryParam.getPage(),empQueryParam.getPageSize());
        List<Emp> empList = empMapper.list(empQueryParam);
        Page<Emp> p = (Page<Emp>) empList;
        return new PageResult<Emp>(p.getTotal(),p.getResult());
    }

    @Transactional(rollbackFor = {Exception.class})
    @Override
    public void save(Emp emp) {
        try {
            emp.setCreateTime(LocalDateTime.now());
            emp.setUpdateTime(LocalDateTime.now());
            empMapper.insert(emp);
            List<EmpExpr> exprList = emp.getExprList();
            if (!CollectionUtils.isEmpty(exprList)){
                exprList.forEach(expr-> expr.setEmpId(emp.getId()));
                empExprMapper.insertBatch(exprList);
            }
        } finally {
            EmpLog empLog = new EmpLog(emp.getId(),LocalDateTime.now(),"新增员工："+emp);
            empLogService.insertLog(empLog);
        }

    }

    @Transactional(rollbackFor = {Exception.class})
    @Override
    public void delete(List<Integer> ids) {
        empMapper.deleteByIds(ids);
        empExprMapper.deleteByEmpIds(ids);
    }

    @Override
    public Emp getInfo(Integer id) {
        return empMapper.getById(id);
    }

    @Transactional(rollbackFor = {Exception.class})
    @Override
    public void update(Emp emp) {
        emp.setUpdateTime(LocalDateTime.now());
        empMapper.updateById(emp);
        empExprMapper.deleteByEmpIds(Arrays.asList(emp.getId()));

        List<EmpExpr> exprList = emp.getExprList();
        if (!CollectionUtils.isEmpty(exprList)){
            exprList.forEach(expr-> expr.setEmpId(emp.getId()));
            empExprMapper.insertBatch(exprList);
        }
    }

    @Override
    public List<Emp> list() {
        return empMapper.findAll();
    }

    @Override
    public LoginInfo login(Emp emp) {
        Emp e = empMapper.selectByUsernameAndPassword(emp.getUsername(),emp.getPassword());
        if (e != null){
            log.info("登录成功,员工信息:{}",e);
            //生成JWT令牌
            Map<String,Object> claims = new HashMap<>();
            claims.put("id",e.getId());
            claims.put("username",e.getUsername());
            String jwt = JwtUtils.generateToken(claims);
            return new LoginInfo(e.getId(),e.getUsername(),e.getName(),jwt);
        }
        return null;
    }
}
